Missing bcmath problem on IBAN entry

silke
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8 years 1 month ago #32326 by silke

Missing bcmath problem on IBAN entry was created by silke

Dear Adrien,

for VMVendor 3.5.1 I see a problem with the new IBAN feature when bcmath is missing (at an older PHP 5.4.20 test system):

Code:

Fatal error: Call to undefined function bcmod() in (...)/components/com_vmvendor/controllers/editprofile.php on line 634

which is refering to the following lines

Code:

if(bcmod($NewString, '97') == 1)
                        {
                                return TRUE;
                        }
                        else{
                                return FALSE;
                        }

To resolve the potential error, you could e.g. include a conditioned function definition (following a suggestion on php.net/manual/de/function.bcmod.php by Andrius Baranauskas and Laurynas Butkus)

Code:

if (!function_exists('bcmod')) {
function bcmod( $x, $y )   
{ 
    // how many numbers to take at once? carefull not to exceed (int) 
    $take = 5;     
    $mod = ''; 
        
    do 
    { 
        $a = (int)$mod.substr( $x, 0, $take ); 
        $x = substr( $x, $take ); 
        $mod = $a % $y;    
    } 
    while ( strlen($x) ); 

    return (int)$mod; 
} 
}

(Please note: I did not re-check the bcmod function defined).

Best regards,
Silke

The following user(s) said Thank You: nordmograph

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nordmograph
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8 years 1 month ago #32327 by nordmograph

Replied by nordmograph on topic Missing bcmath problem on IBAN entry

Very nice SIlke, thank you for this investigation and workaround (impressive 12 y/o post

) but
according to this page you refer to php.net/manual/de/function.bcmod.php
bcmod is supposed to be supported since PHP4 so why doesn't your 5.4.20 dosn't have it ?
Any idea ?

- Need help? Post the URL of the related page (eventualy as confidential info), it will help solve your issue faster.
- An error, notice or warning? report the exact message including the line number
- If you get a white page , enable error reporting and / or check your server error logs.

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silke
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8 years 1 month ago - 8 years 1 month ago #32329 by silke

Replied by silke on topic Missing bcmath problem on IBAN entry

Dear Adrien,
I agree, bcmath should be standard in most distributions and this is so far the only mashine with a lack of support for it.
It is the php5 / apache2-mod_php5 package on distribution with a two year old

Code:

openSUSE 13.1 (x86_64)

Best regards,
Silke
Edit: It is a separate package to install...:

Code:

# zypper install php5-bcmath
# rcapache2 restart

Last edit: 8 years 1 month ago by silke. Reason: added the required apache restart / reload

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silke
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8 years 1 month ago - 8 years 1 month ago #32331 by silke

Replied by silke on topic 2) Removing IBAN does not update / empty the value

Dear Adrien,

a follow up issue:
To check the function after bcmath installation I recreated the old source code and went to the edit profile form again to remove the IBAN (in order to enter it in a second attempt again).
Though I read a success message on update, the following form call does show the IBAN still in place.

Please check your db update / delete routine for the IBAN.

Best regards,
Silke

Last edit: 8 years 1 month ago by silke.

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nordmograph
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8 years 1 month ago #32332 by nordmograph

Replied by nordmograph on topic 2) Removing IBAN does not update / empty the value

Nice catch, this is fixed in 3.5.1b

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silke
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8 years 1 month ago #32333 by silke

Replied by silke on topic Missing bcmath problem on IBAN entry

Yepp, I verified:
1) The IBAN can be removed now (VMVendor 3.5.1b).
2) The call to bcmod() does work after installing the php5-bcmath package and restarting apache (the condtional bcmath definition is not included in release 3.5.1b).

Best regards,
Silke

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Missing bcmath problem on IBAN entry

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